'''
Created on 2013-3-3

@author: yannpxia
'''
# Find the greatest product of five consecutive digits in the 1000-digit number.
import urllib
import re


def Find_the_greatest_product(num_list):
    max = 0
    #    doclocation = urllib.urlopen('http://projecteuler.net/problem=8')
    #    openfile = doclocation.read()
    #    print openfile
    for i in range(0, 1000):
        if i + 5 == 999:
            break
        Five_digit_num = num_list[i:i + 5]
        print Five_digit_num
        if int(Five_digit_num) > max:
            max = int(Five_digit_num)
    print 'the greatest product of five consecutive digits is %d' % max
    return max


def Find_the_greatest_product(num_list):
    max = int(num_list[0:5])
    times = len(num_list) - 5
    for i in range(0, times):
        if max < int(num_list[i:i + 5]):
            max = int(num_list[i:i + 5])
    print 'the greatest product of five consecutive digits is {0}'.format(max)
    return max


if __name__ == '__main__':
    num_list = '''73167176531330624919225119674426574742355312324919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450'''
    print 'length is %s' % len(num_list)
    print Find_the_greatest_product(num_list)
